Summary
- Fundamental design principles for writing maintainable, testable Python code.
- Covers five core patterns: KISS (Keep It Simple), Single Responsibility Principle, Separation of Concerns, Composition Over Inheritance, and the Rule of Three Includes practical code examples contrasting anti-patterns with recommended approaches for each principle Provides layered architecture guidance (API, Service, Repository layers) with dependency injection patterns for testability Emphasizes explicit, readable code over premature abstraction and offers guidelines for function size and complexity management